An automatic evaporator tube winding machine for a freezer and a winding method using the winding machine

Abstract

An embodiment of the present invention discloses an automatic evaporator tube winding machine for a refrigerator and a winding method using the winding machine, including an anti-corrosion tape wrapping mechanism for wrapping anti-corrosion tape around the outer surface of the evaporator tube; a winding mechanism for winding and fixing the evaporator tube on the outer wall of the refrigerator inner liner; a driving device for transporting the evaporator tube from the anti-corrosion tape wrapping mechanism to the winding mechanism; the anti-corrosion tape wrapping mechanism includes a guiding device and a wrapping device; the guiding device is used to transport the anti-corrosion tape to the wrapping device; the wrapping device includes a first wrapping component, a second wrapping component located at the output end of the first wrapping component, and a third wrapping component located at the output end of the second wrapping component; the first wrapping component is used to attach the anti-corrosion tape to the outer surface of the evaporator tube; the second wrapping component and the third wrapping component are used to completely wrap the evaporator tube with the anti-corrosion tape. It effectively solves the problems of refrigerant leakage and non-cooling of the refrigerator caused by the corrosion of the evaporator tube of the refrigerator by defrosting water.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing inner liners of freezers. More specifically, it relates to an automatic evaporator tube winding machine for freezers and a winding method using the winding machine. Background Art

[0002] Currently, the main structure of freezers on the market is still to wind aluminum tubes on the inner liner, and at the same time stick aluminum foil tape to fix the aluminum tubes on the inner liner. Finally, the evaporator pipeline is foamed between the box body and the inner liner through a foaming process. The shape of the freezer is basically rectangular. Since the compressor is installed at the bottom, a space will be reserved for the compressor chamber at the position with the compressor. Therefore, the shape of the inner liner is usually a rectangular shape with a missing corner at the bottom. Due to problems such as the shape and large size of the freezer inner liner, it is not suitable for stretch forming; and due to cost issues, methods such as casting will not be used for processing. Therefore, the inner liners in the industry are all formed by splicing and clamping embossed aluminum plates; usually, the inner liner is divided into a bottom shell and two side panels and clamped and formed.

[0003] This kind of clamped and formed structure is simple in processing, low in cost, and high in efficiency, but it also brings insoluble quality hidden dangers. Since the body of the inner liner is formed by splicing, it causes the clamped part to be unable to be completely sealed. Even if methods such as sticking tape are used, it cannot be completely sealed. During the use of the freezer, it is inevitable to have shutdowns or defrosting and cleaning. When the ice or frost in the freezer melts, the water will seep into the foaming layer along the clamping gap of the inner liner. Due to capillary siphon and other effects, the water will climb up a certain height, and there is a certain probability that it will flow onto the evaporator pipeline. Due to the possible presence of acidic or alkaline substances in the food stored in the freezer, as well as residues from the reaction of the foaming material, etc., the water flowing onto the evaporator pipeline will be acidic or alkaline. After long-term use, it will slowly corrode and eventually cause the pipeline to corrode and perforate, refrigerant leakage, and the freezer not cooling.

[0004] Basically, each freezer manufacturer adopts this kind of spliced and wound inner liner structure. It is very difficult to solve the problem of corrosion and leakage from the structure of the inner liner. The inner liner needs to have good heat conduction and be very thin. Most of them use embossed aluminum plates, with very low cost. The clamped and spliced inner liner structure is high in efficiency, low in cost, and simple in processing technology. It is very difficult to use a replacement method without any seams leaking. Therefore, this kind of corrosion and leakage problem has become an incurable disease in the freezer manufacturing industry, and there is no effective means to solve it. Basically, leakage may occur in about one year. Summary of the Invention

[0005] To solve the above problems, at least one problem to be solved by the present invention is to provide an automatic evaporator tube winding machine for freezers that can wrap a layer of anti-corrosion tape on the surface of the evaporator tube to prevent defrosting water leakage from corroding the evaporator tube.

[0006] Another problem to be solved by the present invention is to provide a winding method for winding an anti-corrosion evaporator tube on the inner liner of a freezer using the automatic evaporator tube winding machine for freezers.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] One aspect of the present invention is to provide an automatic evaporator tube winding machine for a refrigerator, comprising:

[0009] An anti-corrosion tape wrapping mechanism for wrapping the anti-corrosion tape around the outer surface of the evaporator tube;

[0010] A winding mechanism for winding and fixing the evaporator tube on the outer wall of the refrigerator inner liner;

[0011] A driving device for conveying the evaporator tube from the anti-corrosion tape wrapping mechanism to the winding mechanism;

[0012] The anti-corrosion tape wrapping mechanism includes a guiding device and a wrapping device;

[0013] The guiding device is configured to convey the anti-corrosion tape to the wrapping device;

[0014] The wrapping device includes a first wrapping assembly, a second wrapping assembly located at the output end of the first wrapping assembly, and a third wrapping assembly located at the output end of the second wrapping assembly;

[0015] The first wrapping assembly is configured to attach the anti-corrosion tape to the outer surface of the evaporator tube;

[0016] The second wrapping assembly and the third wrapping assembly are configured to tidy up the edges of the anti-corrosion tape so as to completely wrap the evaporator tube.

[0017] In addition, preferably, the first wrapping assembly includes a first pressing wheel and a first supporting wheel;

[0018] The first pressing wheel has an I-shaped structure, and its wheel surface is provided with a V-shaped groove, and the bottom of the V-shaped groove is arc-shaped;

[0019] The first pressing wheel can move closer to or away from the first supporting wheel.

[0020] In addition, preferably, the second wrapping assembly includes a second pressing wheel and a second supporting wheel;

[0021] The second pressing wheel has an I-shaped structure, and its wheel surface is provided with a U-shaped groove;

[0022] The second pressing wheel can move closer to or away from the second supporting wheel.

[0023] In addition, preferably, the third wrapping assembly includes a first wrapping wheel and a second wrapping wheel;

[0024] Grooves are provided on the wheel surfaces of the first wrapping wheel and the second wrapping wheel;

[0025] A channel for the evaporation pipe to pass through is formed between the first wrapping wheel and the second wrapping wheel.

[0026] In addition, in a preferred embodiment, the guiding device includes a guiding wheel located above the first wrapping assembly and a fixed wheel arranged on the side of the first pressing wheel away from the second wrapping assembly;

[0027] The anticorrosive tape is located between the fixed wheel and the first pressing wheel, and the adhesive surface of the anticorrosive tape is pasted on the wheel surface of the fixed wheel.

[0028] In addition, in a preferred embodiment, the wrapping device further includes a cutting knife, and the cutting knife is arranged on the side of the second pressing wheel close to the first wrapping assembly;

[0029] The cutting knife can move close to or away from the second supporting wheel together with the second pressing wheel.

[0030] In addition, in a preferred embodiment, the guiding device includes a braking assembly, the braking assembly is arranged on one side of the guiding wheel, and includes a braking cylinder and a brake block arranged at the output end of the braking cylinder.

[0031] In addition, in a preferred embodiment, the anticorrosive tape wrapping mechanism further includes a straightening device located at the input end of the wrapping device;

[0032] The straightening device is configured to straighten the evaporation pipe, and includes a horizontal straightening wheel set and a vertical straightening wheel set.

[0033] In addition, in a preferred embodiment, the inner liner winding mechanism includes an aluminum foil tape attaching device and a winding device located at the output end of the aluminum foil tape attaching device;

[0034] The driving device is located between the aluminum foil tape attaching device and the third wrapping assembly.

[0035] Another aspect of the present invention lies in providing a winding method using the above-mentioned cold cabinet evaporation pipe automatic inner liner winding machine, which is characterized by including the following steps,

[0036] S1. Start the first wrapping assembly, the second wrapping assembly and the third wrapping assembly, and wrap a layer of anticorrosive tape on the outer surface of the evaporation pipe;

[0037] S2. Start the driving device, and convey the evaporation pipe wrapped with the anticorrosive tape to the inner liner winding mechanism;

[0038] S3. Start the inner liner winding mechanism, and wind and fix the evaporation pipe wrapped with the anticorrosive tape on the outer wall of the cold cabinet inner liner.

[0039] The beneficial effects of this application are as follows:

[0040] In view of the technical problems existing in the prior art, an embodiment of the present application provides an automatic evaporator tube winding machine for a refrigerator and a winding method using the winding machine. By improving the existing automatic winding machine, a layer of anti-corrosion tape that can prevent defrosting water from corroding the evaporator tube can be wrapped on the outer surface of the evaporator tube without affecting the normal winding efficiency and quality, and the start and stop of the anti-corrosion tape wrapping mechanism can be automatically controlled, with simple operation and high automation. The products processed by the winding machine provided in this embodiment can effectively solve the problems of refrigerant leakage and non-cooling of the refrigerator caused by the corrosion of the evaporator tube by defrosting water, and solve the technical problems in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings.

[0042] Figure 1 A schematic structural diagram showing the evaporator tube wound on the inner liner.

[0043] Figure 2 A schematic overall structural diagram of the winding machine provided by the present invention is shown.

[0044] Figure 3 A schematic structural diagram of the anti-corrosion tape wrapping mechanism provided by the present invention is shown.

[0045] Figure 4 A front view of the anti-corrosion tape wrapping mechanism provided by the present invention is shown.

[0046] Figure 5 A schematic structural diagram showing the anti-corrosion tape on the evaporator tube after passing through the first wrapping assembly provided by the present invention is shown.

[0047] Figure 6 A schematic diagram of the mechanism of the anti-corrosion tape on the evaporator tube after passing through the second wrapping assembly provided by the present invention is shown.

[0048] Figure 7 A schematic structural diagram showing the anti-corrosion tape on the evaporator tube after passing through the first wrapping wheel provided by the present invention is shown.

[0049] Figure 8 A schematic structural diagram showing the anti-corrosion tape on the evaporator tube after passing through the wrapping tail wheel provided by the present invention is shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0050] In order to more clearly illustrate the present invention, the present invention will be further described below with reference to the preferred embodiments and the accompanying drawings. Similar components in the drawings are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the protection scope of the present invention.

[0051] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0052] It should also be noted that in the description of the present application, relative terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0053] To ensure that the defrost water does not corrode the evaporation pipe wound on the outer wall of the inner liner during the use of the refrigerator, an anti-corrosion tape is wrapped on the outer surface of the evaporation pipe. Figure 1 FIG. is a schematic structural view of the evaporation pipe wound on the inner liner. Usually, it is wound at the bottom of the inner liner, that is, wound on Figure 1A section of the evaporation pipe of the protruding part of the inner liner shown in the figure will be corroded. Therefore, in order to save materials and costs, it is only necessary to wrap the outer surface of a section of the evaporation pipe wound around the protruding part of the inner liner with anti-corrosion tape. In order not to affect the production efficiency and rhythm of the inner liner winding process, it is necessary to wrap the anti-corrosion tape while winding the inner liner. According to the above requirements, an embodiment of the present invention provides a cold cabinet evaporation pipe automatic inner liner winding machine, including: an anti-corrosion tape wrapping mechanism 1, an inner liner winding mechanism 2, and a driving device 3 arranged between the anti-corrosion tape wrapping mechanism 1 and the inner liner winding mechanism 2. The anti-corrosion tape wrapping mechanism 1 is used to wrap the anti-corrosion tape 200 on the outer surface of the evaporation pipe 100. The inner liner winding mechanism 2 is used to wind and fix the evaporation pipe on the outer wall of the cold cabinet inner liner. The driving device 3 is used to convey the evaporation pipe 100 from the anti-corrosion tape wrapping mechanism 1 to the inner liner winding mechanism 2.

[0054] In a specific embodiment, the anti-corrosion tape wrapping mechanism 1 includes a guiding device 11 and a wrapping device 12. The guiding device 11 and the wrapping device 12 are both installed on the frame body 111, and the guiding device 11 is located above the wrapping device. The guiding device 11 includes a guiding wheel 112. The guiding wheel 112 is arranged on the frame body 11, below the anti-corrosion tape 200, and is used to tension and align the anti-corrosion tape to facilitate subsequent wrapping work.

[0055] In a specific example, the wrapping device 12 includes a first wrapping component, a second wrapping component, and a third wrapping component arranged below the guiding wheel 112. The first wrapping component is used to paste the anti-corrosion tape 200 on the surface of the evaporation pipe 100. The second wrapping component is located at the output end of the first wrapping component and is used to arrange the anti-corrosion tape pasted on the evaporation pipe 100 so that it is wrapped around the evaporation pipe 100 in a U shape. The third wrapping component is located at the output end of the second wrapping component and is used to arrange the edges of the anti-corrosion tape pasted on the evaporation pipe 100 so that the left and right edges of the anti-corrosion tape are completely wrapped around the evaporation pipe 100, and ensure that the interface part where the left and right edges of the anti-corrosion tape meet tightly wraps the evaporation pipe 100 without leaving gaps to prevent defrosting water from seeping in and corroding the evaporation pipe.

[0056] In this embodiment, the first wrapping assembly includes a first pressing wheel 121 and a first supporting wheel 122. The first pressing wheel 121 is movably mounted on the frame body 111 through a mounting plate, and the mounting plate can drive the first pressing wheel 121 to move closer to or away from the first supporting wheel 122 under the action of a driving cylinder. When it is necessary to wrap the anticorrosion tape on the evaporation pipe 100, the first pressing wheel 121 approaches the first supporting wheel 122 under the action of the driving cylinder to paste the anticorrosion tape on the evaporation pipe. When it is not necessary to wrap the anticorrosion tape on the evaporation pipe 100, the first pressing wheel 121 moves away from the first supporting wheel 122 under the action of the driving cylinder, so that the evaporation pipe 100 can directly pass through the first wrapping assembly and be directly wound on the outer wall of the inner tank without wrapping the anticorrosion tape.

[0057] In a specific embodiment, the guiding device 11 further includes a fixed wheel 113 located on the side of the first pressing wheel 121 away from the second wrapping assembly. The fixed wheel 113 and the first pressing wheel 121 are mounted on the same mounting plate and can move together with the mounting plate and the first pressing wheel 121. The anticorrosion tape 200 enters between the first pressing wheel 121 and the fixed wheel 113 after being tensioned and guided by the guiding wheel 112. The adhesive surface of the anticorrosion tape is pasted on the fixed wheel 113. When it is necessary to wrap the anticorrosion tape on the surface of the evaporation pipe 100, the first pressing wheel 121 and the fixed wheel 113 move downward together to paste the anticorrosion tape onto the evaporation pipe 100. Subsequently, the evaporation pipe advances under the action of the driving device 3. As the evaporation pipe advances, the anticorrosion tape is continuously pasted on the outer surface of the evaporation pipe.

[0058] The first pressing wheel 121 is in an I shape. A V-shaped groove with a circular arc bottom is formed in the middle of the wheel surface of the first pressing wheel 121. The width of the groove is slightly larger than the diameter of the evaporation pipe after wrapping the anticorrosion tape. Such a setting can ensure that the anticorrosion tape tightly adheres to the surface of the evaporation pipe. The first pressing wheel 121 can move closer to or away from the first supporting wheel 122 along the frame body 111 under the drive of the driving cylinder. When the evaporation pipe does not need to be wrapped with the anticorrosion tape, the first pressing wheel 121 moves away from the first supporting wheel 122, and neither the first pressing wheel 121 nor the first supporting wheel 122 contacts the surface of the evaporation pipe. The evaporation pipe directly passes through and is transported to the winding mechanism for the inner tank by the driving device, and the winding mechanism winds and fixes the evaporation pipe on the outer wall of the inner tank. When winding to the protruding part of the inner tank, the outer surface of the evaporation pipe needs to be wrapped with the anticorrosion tape. At this time, the first pressing wheel 121 presses down and approaches the first supporting wheel 122 to paste the anticorrosion tape onto the evaporation pipe. And during the downward pressing process of the first pressing wheel, the first supporting wheel 122 abuts against the evaporation pipe, so that the evaporation pipe and the anticorrosion tape pasted on the evaporation pipe enter the V-shaped groove together, making the anticorrosion tape tightly adhere to the surface of the evaporation pipe. As shown in the figure, after passing through the first wrapping assembly, the anticorrosion tape is wrapped on the evaporation pipe in an inverted V shape. Subsequently, the evaporation pipe moves to the second wrapping assembly under the action of the driving device.

[0059] In a specific example, the second wrapping assembly includes a second pressing wheel 123 and a second supporting wheel 124. The second pressing wheel 123 is movably mounted on the frame body 111 through a connecting plate. One end of the connecting plate is connected with a driving cylinder, and under the action of the driving cylinder, the second pressing wheel 123 can move closer to or away from the second supporting wheel 124. When the evaporation pipe does not need to be wrapped with anti-corrosion tape, the second pressing wheel 123 moves away from the second supporting wheel 124, and neither the second pressing wheel 123 nor the second supporting wheel 124 contacts the evaporation pipe. The evaporation pipe directly passes through the second wrapping assembly and is conveyed by the driving device to the bile-winding mechanism 2 for bile-winding work. When winding to the protruding part of the inner tank, it is necessary to wrap the anti-corrosion tape on the outer surface of the evaporation pipe. The first pressing wheel 121 presses down and approaches the first supporting wheel 122, and wraps the anti-corrosion tape in an inverted V shape on the surface of the evaporation pipe. Subsequently, the evaporation pipe enters the second wrapping assembly, and the second pressing wheel 123 presses down and approaches the second supporting wheel 124, further wrapping the anti-corrosion tape wrapped on the evaporation pipe in an inverted V shape around the evaporation pipe, forming an inverted U shape around the evaporation pipe.

[0060] In this embodiment, the second pressing wheel 123 is in an I shape, and a U-shaped groove is formed in the middle of the wheel surface of the second pressing wheel 123. The U-shaped groove acts on the anti-corrosion tape on the evaporation pipe to further wrap the evaporation pipe, forming an inverted U shape around the evaporation pipe. When the evaporation pipe winds to the protruding part of the inner tank, the anti-corrosion tape wrapping mechanism 1 is started to start the work of wrapping the anti-corrosion tape on the evaporation pipe. The first pressing wheel 121 presses down to paste the anti-corrosion tape onto the evaporation pipe and make it adhere tightly. With the movement of the driving device, the evaporation pipe moves from the first wrapping assembly to the second evaporation assembly. The second pressing wheel 123 presses down to further wrap the anti-corrosion tape on the evaporation pipe, forming an inverted U shape around the evaporation pipe. Subsequently, the evaporation pipe enters the third wrapping assembly, and the third wrapping assembly completely wraps the anti-corrosion tape on the evaporation pipe and presses the interface part tightly. Then, the evaporation pipe wrapped with the anti-corrosion tape moves to the bile-winding mechanism 2 and is wound and fixed on the protruding part of the inner tank under the action of the bile-winding mechanism 2.

[0061] The third wrapping component is located at the output end of the second wrapping component, and includes a first wrapping wheel 125, a second wrapping wheel 126, and a wrapping tail wheel 127. The first wrapping wheel 125 and the second wrapping wheel 126 are respectively located on the left and right sides of the evaporation pipe and are arranged staggeredly. Grooves are provided on the wheel surfaces of the first wrapping wheel 125 and the second wrapping wheel 126, and the grooves of the first wrapping wheel 125 and the second wrapping wheel 126 form a passage for the evaporation pipe to pass through. The first wrapping wheel is used to completely wrap the left part of the anti-corrosion tape in an inverted U shape already wrapped on the evaporation pipe onto the evaporation pipe; the second wrapping wheel 126 is used to wrap the remaining un-wrapped right anti-corrosion tape onto the evaporation pipe. The wrapping tail wheel 127 is arranged at the very end of the third generation of the wrapping component, and is used to compact the interfaces of the left and right edges of the anti-corrosion tape wrapped on the evaporation pipe, ensuring that the interface part where the left and right edges of the anti-corrosion tape meet tightly wraps the evaporation pipe 100 without leaving any gaps, preventing defrosting water from seeping in and corroding the evaporation pipe.

[0062] In a specific embodiment, the guiding device 11 further includes a braking component arranged on the frame body 111. The braking component is arranged on one side of the guiding wheel 112 and is used to prevent the continuous output of the anti-corrosion tape after the anti-corrosion tape wrapping of the evaporation pipe is completed. The braking component includes a brake cylinder 114 and a brake block 115 located at the output end of the brake cylinder 114. When the anti-corrosion tape wrapping of a section of the evaporation pipe that needs to be wrapped with the anti-corrosion tape is completed, the output end of the brake cylinder 114 extends, and the brake block 115 presses tightly against the guiding wheel 112. The anti-corrosion tape is clamped between the brake block 115 and the guiding wheel 112. The evaporation pipe 100 continues to move. Since the main material of the anti-corrosion tape selected in this embodiment is aluminum foil, the anti-corrosion tape will be torn during the movement of the evaporation pipe 100. The anti-corrosion tape wrapping mechanism 1 stops the anti-corrosion tape wrapping work, and the first pressing wheel 121 and the second pressing wheel 123 move up to their initial positions.

[0063] In a preferred embodiment, the wrapping device 12 further includes a cutting knife 128. The cutting knife 128 is disposed on a side of the second pressing wheel 123 close to the first wrapping assembly. The cutting knife 128 and the second pressing wheel 123 are mounted on the same connecting plate, and the cutting knife 128 can move closer to or away from the second supporting wheel 124 together with the second pressing wheel 123. When the anticorrosive tape wrapping of a section of the evaporation pipe that needs to be wrapped with the anticorrosive tape is completed, the output end of the brake cylinder 114 extends, and the brake block 115 presses tightly against the guiding wheel 112. The anticorrosive tape is clamped between the brake block 115 and the guiding wheel 112. The evaporation pipe 100 continues to move, and under the action of tension, the anticorrosive tape will be cut by the cutting knife 128. Since the cutting knife 128 is serrated, after the anticorrosive tape is cut, the cut end of the tape will adhere to the cutting knife 128 under the action of the adhesive surface of the tape. When the anticorrosive tape wrapping mechanism 1 is started again, the first pressing wheel 121 and the second pressing wheel 123 press down, driving the anticorrosive tape to adhere to the evaporation pipe.

[0064] In a specific embodiment, the anticorrosive tape wrapping mechanism further includes a blanking device 13 and a straightening device 14. The straightening device 14 is located between the blanking device and the wrapping device 12. During the working process, the coiled evaporation pipes 100 need to be blanked by the blanking device 13 and straightened by the straightening device 14 before the subsequent work of winding the liner or wrapping the anticorrosive tape can be carried out. The straightening device 14 includes a vertical straightening assembly 141 and a horizontal straightening assembly 142. The vertical straightening assembly 141 includes a vertical straightening fixing seat and a plurality of vertically staggered straightening wheels arranged on the vertical straightening fixing seat. The horizontal straightening assembly 142 includes a horizontal straightening fixing seat and a plurality of horizontally staggered straightening wheels arranged on the horizontal straightening fixing seat. The straightening wheels can be finely adjusted on the straightening fixing seat, and the evaporation pipes are corrected through fine adjustment.

[0065] In a specific embodiment, the liner winding mechanism 2 includes an aluminum foil tape attaching device 21 and a liner winding device 22 located at the output end of the aluminum foil tape attaching device. The driving device 3 is located between the aluminum foil tape attaching device 21 and the third wrapping assembly. The aluminum foil tape attaching device 21 is used to attach an aluminum foil tape to the outer surface of the evaporation pipe (including the evaporation pipe wrapped with the anticorrosive tape). The evaporation pipe with the aluminum foil tape attached is wound around the outer surface of the refrigerator liner by the liner winding device 22 and fixed to the liner through the aluminum foil tape attached to the evaporation pipe. Since the principles of the aluminum foil tape attaching device 21 and the liner winding device 22 are similar to those of the prior art, they will not be described in detail in the present invention.

[0066] Another embodiment of the present invention provides a liner winding method using the above-mentioned liner winding machine, including the following steps:

[0067] S1. The coiled evaporation pipes are cut by the cutting device 13 and enter the straightening device 14.

[0068] S2. The straightening device 14 straightens the evaporation pipes, and the straightened evaporation pipes enter the wrapping device 12.

[0069] S3. When the wrapping device 12 is not working, the driving device 3 transports the evaporation pipes to the aluminum foil tape attaching device 21, and the aluminum foil tape attaching device 21 attaches aluminum foil tape to the evaporation pipes.

[0070] S4. The pipe winding device 22 winds the evaporation pipes with aluminum foil tape attached thereto from top to bottom on the outer wall of the inner tank.

[0071] S5. When the pipe winding device 22 winds to the protruding part of the inner tank, the wrapping device 12 is started, and the first pressing wheel 121 presses down to wrap the anticorrosive tape in an inverted V shape on the evaporation pipes.

[0072] S6. The evaporation pipes wrapped with the anticorrosive tape enter the second wrapping assembly from the first wrapping assembly, and the second pressing wheel 123 presses down to further wrap the aluminum foil tape already attached to the evaporation pipes on the evaporation pipes, wrapping them in an inverted U shape on the evaporation pipes.

[0073] S7. The evaporation pipes wrapped with the anticorrosive tape enter the third wrapping assembly from the second wrapping assembly, and the third wrapping assembly arranges the left and right edges of the anticorrosive tape on the evaporation pipes to completely wrap the outer surface of the evaporation pipes and presses the interface tightly.

[0074] S8. The driving device 3 transports the evaporation pipes completely wrapped with the anticorrosive tape to the aluminum foil tape attaching device 21, and the aluminum foil tape attaching device 21 attaches aluminum foil tape to the evaporation pipes.

[0075] S9. The pipe winding device 22 continues to wind the evaporation pipes with aluminum foil tape attached thereto from top to bottom on the protruding part of the inner tank.

[0076] The pipe winding machine provided by the embodiment of the present invention can, by improving the existing automatic pipe winding machine, wrap a layer of anticorrosive tape that can prevent defrosting water from corroding the evaporation pipes on the outer surface of the evaporation pipes without affecting the normal pipe winding efficiency and quality, and can automatically control the start and stop of the anticorrosive tape wrapping mechanism. The operation is simple and the degree of automation is high. The products processed by the pipe winding machine provided by this embodiment can effectively solve the problems of refrigerant leakage and non-cooling of the cold cabinet caused by the corrosion of the evaporation pipes of the cold cabinet by defrosting water, and solve the technical problems in the industry.

[0077] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to enumerate all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. An automatic evaporator tube winding machine for a freezer, characterized in that The bile-wrapping machine includes: An anti-corrosion tape wrapping mechanism for wrapping anti-corrosion tape around the outer surface of the evaporation tube; A bile-wrapping mechanism for winding and fixing the evaporation tube on the outer wall of the inner liner of the freezer; A driving device for transporting the evaporation tube from the anti-corrosion tape wrapping mechanism to the bile-wrapping mechanism; The anti-corrosion tape wrapping mechanism includes a guiding device and a wrapping device; The guiding device is configured to transport the anti-corrosion tape to the wrapping device; The wrapping device includes a first wrapping assembly, a second wrapping assembly located at the output end of the first wrapping assembly, and a third wrapping assembly located at the output end of the second wrapping assembly; The first wrapping assembly is configured to attach the anti-corrosion tape to the outer surface of the evaporation tube; The second wrapping assembly and the third wrapping assembly are configured to trim the edges of the anti-corrosion tape so that it completely wraps the evaporation tube.

2. The winding machine according to claim 1, characterized in that The first wrapping assembly includes a first pressing wheel and a first supporting wheel; The first pressing wheel has an I-shaped structure, and its wheel surface is provided with a V-shaped groove, and the bottom of the V-shaped groove is arc-shaped; The first pressing wheel can move closer to or away from the first supporting wheel.

3. The winding machine according to claim 1, characterized in that The second wrapping assembly includes a second pressing wheel and a second supporting wheel; The second pressing wheel has an I-shaped structure, and its wheel surface is provided with a U-shaped groove; The second pressing wheel can move closer to or away from the second supporting wheel.

4. The winding machine according to claim 1, characterized in that The third wrapping assembly includes a first wrapping wheel and a second wrapping wheel; Grooves are provided on the wheel surfaces of the first wrapping wheel and the second wrapping wheel; A channel for the evaporation tube to pass through is formed between the first wrapping wheel and the second wrapping wheel.

5. The winding machine according to claim 2, characterized in that The guiding device includes a guiding wheel located above the first wrapping assembly and a fixed wheel provided on the side of the first pressing wheel away from the second wrapping assembly; The anti-corrosion tape is located between the fixed wheel and the first pressing wheel, and the adhesive surface of the anti-corrosion tape is adhered to the wheel surface of the fixed wheel.

6. The winding machine according to claim 3, characterized in that The wrapping device further includes a cutting knife, and the cutting knife is provided on the side of the second pressing wheel close to the first wrapping assembly; The cutting knife can move closer to or away from the second supporting wheel together with the second pressing wheel.

7. The winding machine according to claim 5, characterized in that The guiding device includes a braking assembly, and the braking assembly is provided on one side of the guiding wheel and includes a braking cylinder and a braking block provided at the output end of the braking cylinder.

8. The winding machine according to claim 1, characterized in that The anti-corrosion tape wrapping mechanism further includes a straightening device located at the input end of the wrapping device; The straightening device is configured to straighten the evaporation tube and includes a horizontal straightening wheel set and a vertical straightening wheel set.

9. The winding machine according to claim 1, characterized in that The bile-wrapping mechanism includes an aluminum foil tape attaching device and a bile-wrapping device located at the output end of the aluminum foil tape attaching device; The driving device is located between the aluminum foil tape attaching device and the third wrapping assembly.

10. A winding method using the automatic evaporator tube winding machine for a freezer according to any one of claims 1-9, characterized in that It includes the following steps S1. Start the first wrapping assembly, the second wrapping assembly and the third wrapping assembly to wrap a layer of anti-corrosion tape on the outer surface of the evaporation tube; S2. Start the driving device to transport the evaporation tube wrapped with anti-corrosion tape to the bile-wrapping mechanism; S3. Start the bile-wrapping mechanism to wind and fix the evaporation tube wrapped with anti-corrosion tape on the outer wall of the inner liner of the freezer.

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